How to convert hours to seconds
Formula: s = h × 3,600
Worked example: 8 h → 8 × 3,600 = 28,800 s
Hours to seconds conversion chart
| Hours (h) | Seconds (s) |
|---|---|
| 1 h | 3,600 s |
| 2 h | 7,200 s |
| 3 h | 10,800 s |
| 4 h | 14,400 s |
| 5 h | 18,000 s |
| 6 h | 21,600 s |
| 7 h | 25,200 s |
| 8 h | 28,800 s |
| 9 h | 32,400 s |
| 10 h | 36,000 s |
| 12 h | 43,200 s |
| 15 h | 54,000 s |
| 20 h | 72,000 s |
| 24 h | 86,400 s |
| 30 h | 108,000 s |
| 36 h | 129,600 s |
| 45 h | 162,000 s |
| 48 h | 172,800 s |
| 60 h | 216,000 s |
| 72 h | 259,200 s |
| 90 h | 324,000 s |
| 100 h | 360,000 s |
| 120 h | 432,000 s |
What is an hour?
The hour equals 60 minutes or 3,600 seconds. Work time, pay rates, parking and travel durations are counted in hours; a full-time US work week is usually 40 hours.
What is a second?
The second is the SI base unit of time, defined from the vibration frequency of the cesium-133 atom. A minute has 60 seconds, an hour 3,600 and a day 86,400.